Physical Science Concepts in Action Chapter 7

True or false

You do work when you mannequin pose with an object in your hand.

• true

• false

Two factors that determine work are

• force

• acceleration

• mass

• distance

• velocity

units of force are

• newtons

• grams

• joules

• meters

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if you push a cart with a force of 60 N for 2 m... how much work have you done

• 120 J

• 30 J

• 120 N

• 30 N

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work transfers

• sweat
• energy
• velocity
• effort

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Fred kicks a ball with a force of 20N to George, who is 5M away. How much work was done to the ball?

• 25J

• 100J

• 4J

• 75J

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If Jay Loppy pushes his van 20 meters how much work is done?

• 2,000J

• 40,000J

• 10,000J

• 800,000J

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Gravitational potential energy depends on the ________ and ________ of the object. 

• Height and mass
• Friction and movement
• Mass and Movement
• Height and Friction 

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When you stretch a rubber band, you are storing __________ energy. 

• kinetic 
• potential
• none of the above
• all of the above 

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When a pendulum swings, at which point is potential energy at its greatest?

• 1

• 2

• 3

• 4

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